Slop fishing is used to describe when you are fishing an area where there is moss(duckwart) or pads, all clumped to together and covers the water. There may be some pockets of open water, but most of the water will have a green covering to it.
On the Mississippi River there many patches of “slop,” that is why you need to relate other things to this. Such as other cover, depth, flow, or pockets. Also if the fish want the bait you will know, so if you don’t get bit, move to a different area.
The main tactic to fish for “slop” bass is to use a soft hollow bodied rat. There are many comapnies out there that make these. I like the Southern Pro, Scum frog in white, brown, gray, or black.
For equipment, I would suggest a baitcasting reel on a 7’6″ heavy rod. I like 20-50 lb. Power Pro line on my reel.
Now, too fish the frog, you cast it out and reel it across the moss, or skip it, you just let the fish dictate what they want. When a fish hits, count to two and set the hook, or until you feel the fish. If the fish missess your frog then you can either cast your frog back over where the fish hit and let your frog sit in the blow up hole and just shake it, this drives them wild. Another option is to pitch a plastic bait into the hole. I like a brush hog or an RC Tackle tube craw.
Whether you get a fish on the frog or on a plastic bait flipped in there. You need to hook that fish good, and get them up and out of the jungle of weeds underneath the water. If need be trolling motor to where the fish is.
This method of fishing is very popular and is a very exciting way to fish for bass on the Mississippi River.
Any other questions let me know.